package Class9_2;

import java.util.Scanner;

public class Work1 {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        try {
            while (true) {
                int a = in.nextInt();
                if (a == 1) {
                    System.out.println("登陆");
                    return;
                } else if (a == 2) {
                    System.out.println("注册");
                    return;
                } else if (a == 3) {
                    System.out.println("联系客服");
                    return;
                }else {
                    System.out.println("输入1-3");
                }
            }
        }catch (Exception e){
            System.out.println(e);
        }
    }
}
